Sodium anti-perovskite solid electrolyte compositions

A technology of solid electrolyte and anti-perovskite, applied in the direction of electrolyte, sodium/potassium compound, calcium/strontium/barium compound, etc., can solve the problems of poor machinability and high cost, achieve optimized performance and improve ion conductivity Effect
CN106797052AInactive Publication Date: 2017-05-31BOARD OF RGT NEVADA SYST OF HIGHER EDUCATION ON BEHALF OF THE UNIV OF NEVADA RENO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BOARD OF RGT NEVADA SYST OF HIGHER EDUCATION ON BEHALF OF THE UNIV OF NEVADA RENO
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

Na-rich electrolyte compositions provided herein can be used in a variety of devices, such as sodium ionic batteries, capacitors and other electrochemical devices. Na-rich electrolyte compositions provided herein can have a chemical formula of Na3OX, Na3SX, Na (3-delta) M delta / 2OX and Na (3-delta) M delta / 2SX wherein 0 ;lt; delta & lt; 0.8, wherein X is a monovalent anion selected from fluoride, chloride, bromide, iodide, H-, CN-, BF4-, BH4-, ClO4-, CH3-, NO2-, NH2- and mixtures thereof, and wherein M is a divalent metal selected from the group consisting of magnesium, calcium, barium, strontium and mixtures thereof. Na-rich electrolyte compositions provided herein can have a chemical formula of Na (3-delta) M delta / 3OX and / or Na (3-delta) M delta / 3SX; wherein 0 & lt;delta & lt; 0.5, wherein M is a trivalent cation M+3, and wherein X is selected from fluoride, chloride, bromide, iodide, H-, CN-, BF4-, BH4-, ClO4-, CH3-, NO2-, NH2- and mixtures thereof. Synthesis and processing methods of NaRAP compositions for battery, capacitor, and other electrochemical applications are also provided.
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Description

[0001] Statement on Federal Rights

[0002] This invention is the result of an academic collaboration between the University of Nevada Las Vegas (UNLV) and Peking University (PKU). The joint efforts of UNLV and PKU professors and postdocs were the key to success. technical field

[0003] The present invention generally relates to solid electrolyte compositions and devices such as sodium batteries and capacitors employing Na-rich anti-perovskite compositions. The present invention also relates to methods of synthesis and processing of Na-rich antiperovskite compositions for sodium battery and capacitor applications. Background technique

[0004] Batteries with inorganic solid-state electrolytes have many advantages, such as improved safety and cycle efficiency. All solid-state sodium-ion batteries are considered promising for next-generation vehicles and large-scale energy storage. Existing solid electrolytes for sodium batteries are NASICON type ceramics and sulfides. Ho...

Claims

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